Cowl-lamp.



H. A. DOUGLAS.

cowL' LAMP.

APPLICATION FILED MAR. 27,1916.

Patented Miir. 6, 1917.

HARRY A. DOUGLAS, OF BBONSON, MICHIGAN, ASSIGNOR TO DOUGLAS & RUDD MFG. 00.. 0F BRONSON, MICHIGAN, A CORPORATION OF MICHIGAN.

COWL-LAMP.

Specification of Letters Patent.

Patented Mar. 6, 1917.

Application filed March 27, 1916. Serial No. 86,866.

To all whom it may concern:

Be it kn wn that I, IIARRY A. DOUGLAS, citizen. of the United States, residing at Bronson, in the county of Branch and State of Michigan, have invented a certain new and useful Improvement in Cowl-Lamps, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to sockets for incandescent lamps, a structure involving my invention being of particular service where a cowl is used to shield a lamp bulb and to limit the passage of light therefrom.

The device of my invention is inclusive of a tubular shell secured at one end to a plug f insulation that constitutes a contact carrier for including the lamp in circuit and a flange at the other end of the shell, the outer marginal portions of which flange being preferably continued to form mounting lugs for the socket and a short split tubular portion or rim upon which the cowl may he slipped and on which the cowl may be turned to define the direction in which light is to emanate from the lamp. I

I will explain my invention more fully by reference to the accompanying drawing showingthe preferred embodiment thereof and in which Figure 1 i-s a view in elevation of a structure embodying the invention, a support for the lamp socket being indicated in section; Fig. 2 is a view similar to Fig. 1 excepting that the lamp socket and the cowl are shown in section Fig. 3 is a view on line 2-2 of Fig. 2, the plug and lamp being shown in full view while other parts are shown in section; Fig. 4 is a view on line 4 4 of Fig. 1; and Fig. 5 is a perspective view.

Like parts are indicated by similar charactersv of reference throughout the different figures.

The tubular shell 1 has a plug 2 secured to one end thereof, this plug carrying contacts 3, 4 working within spring barrels 5, 6, the rear ends of the contacts having enlarge ments which engage the inturncd front ends of the spring barrels so that the contacts are prevented from leaving engagement With the barrels. These spring barrels are connected with circuit terminals, as usual.

Coiled springs 7 and 8 are disposed in the 7 width of the lugs.

spring barrels 5, 6 for the p ln'pose of thrusting the contacts 3 and l butwardly. The shell 1 has bayonet recess formations 9, 10 by means of which a lamp may be held Wltl1 in the socket, the base of the lamp carrying bayonet pins 11 for reception within the bayonet recesses and when the lamp is thus engaged with the shell 1 the contacts 3 and l are thrust, by the springs 7 and 8, into engagement with the contacts 12 and 13 carried by the base of the lamp and constituting terminals of the lamp filament 14.. The bayonet recesses f) are desirably formed by outward depressions in the forward-end of the shell instead of being in the nature of slots cut through the shell.

The lamp. receiving end of the shell is spread outwardly to form a flange 15 that constitutes an abutment to define the position of the shell with respect to the mounting 16 which may be a dashboard man antomobile, for example. The annular flange 15 is extended to form a mounting lug or lugs 17 extending laterally of the shell and which may be provided with screw holes for the reception of screws 18 employed to fasten the fastening lugs upon the (.lashboard or other support. The flange also has a short forwardly projecting tubular extension 19, that issubstantially (to-axial with the shell and which extension is split where the lug formation occurs in order that the flange, the lug formation. and the tubular extension may be integrally formed with the balance of the shell 1, the extension 19 being discontinued where the lugs 17 occu-t so that such extension'is divided into. parts that are separated substantially The cowl or hoodQO may be slipped upon theshort tube 19 and turned thereon, the light from the lamp bulb passing through the opening or passage 21' in the cowl or hood to shine directly upon the object to be illuminated.

Having thus described my invention I claim as new and desire to secure by'Lettcrs Patent the foll0Wing:-

A lamp socket including a shell having a contactcarrying plug in one end thereofof the flange end prujecting forwardly therefrom and belng substantially co-axial with the'shell, the hood receiving tubular extension being discontinued Where the fastening lug formation projects from the flange substantially teen extent equaling thewidth of such fastening lug formation; in combination With a lamp held Within the Socket and a head supported by the tubular' ezgtension of the flange and having a light transmit- 10 HARRY A; DOUGLAS.

\Vitnesses:

ARTHUR D. LINDSEY, H. C. BOWKER. 

